At the end of June 2016, the U.S. Center for Disease Control (CDC) released an updated Vaccine Storage and Handling Toolkit. Among the most interesting changes is the new recommended Fahrenheit temperature range for refrigerated vaccines. The Fahrenheit temperature range for refrigerated vaccines was updated from 35°F - 46°F to 36°F - 46°F. The Celsius temperature range remains unchanged: 2°C - 8°C.